Ancula gibbosa (Risso, 1818)
Yellow markings confined to appendages and dorsal line on tail; no other coloured markings.
1: two forward pointing elongate papillae at base of each rhinophore (can be mistaken for an anterior veil when viewed from above).
2 no elongate processes on anterior edge of head (but has white oral tentacles).
3: oral tentacle.
4: several erect elongate papillae on either side of the gills.
5: orange line on tail
Length 10 mm. Menai Strait, Wales. March 2011